1In 4-quart Dutch oven, cook beef and onion over medium-high heat 5 to 7 minutes, stirring occasionally, until beef is thoroughly cooked; drain.
2Stir in hot water, contents of sauce mix pouch (from Hamburger Helper box), tomatoes, corn and cheese; break up tomatoes. Heat to boiling, stirring constantly.
3Reduce heat; cover and simmer 10 minutes, stirring occasionally.
4Stir in contents of uncooked pasta pouch (from Hamburger Helper box) and zucchini. Cover; cook 10 minutes longer. Sprinkle each serving with additional grated Parmesan cheese.